Tsubaki BS Série Manuel D'installation Et D'entretien page 3

Installation and Usage
1. Recommended shaft tolerance is shown below.
0 to 1.20 inches dia.
1.20 to 2.00 inches dia.
30mm to 50mm dia.
2.00 to 3.15 inches dia.
50mm to 80mm dia.
3.15 to 4.70 inches dia.
80mm to 120mm dia.
4.70 to 7.10 inches dia.
120mm to 180mm dia.
7.10 to 9.85 inches dia.
180mm to 250mm dia.
9.85 to 12.40 inches dia.
250mm to 315mm dia.
12.40 to 15.70 inches dia.
315mm to 400mm dia.
15.70 to 17.72 inches dia.
400mm to 450mm dia.
2. Before installation, verify that the rotation of inner race is in the same direction as the direction of the conveyor shaft.
3. Clean the shaft and remove burrs.
4. Plate design torque arm installation
4-1. Securely install the torque arm to Backstop using bolts with a strength class of 10.9 grade or higher. Make sure the surface of
torque arm that contacts the end face of outer race is flat and free of dust in order to get enough frictional force.
4-2. Apply pressure only on the end face of inner race when installing the Backstop onto the shaft. Do not hit the inner race directly
with a hammer or apply pressure on the outer race, oil seal, or grease fitting. See Fig 1.
4-3. Always use a parallel key for installation onto the shaft and then fix the Backstop to the shaft with the end plate or shaft collar.
Never use a tapered key otherwise the Backstop will be damaged. The key should be in accordance with ANSI B17, 1-1967
(R 1998).
4-4. When installing models BS160HS or BS160 and above (grease lubrication types), place one the four socket plugs underneath
the Backstop. This will allow for easy drainage of the grease during maintenance.
4-5. The end of torque arm will move to some extent while the conveyor is operating. Support the torque arm end only in the
direction of rotation, be sure to allow it a certain amount of free movement axially. See Fig 2. The Backstop sustains damage
if the torque arm end is fixed securely.
4-6. A single torque arm is sufficient for models BS30 to BS200, BS160HS and BS200HS. One torque arm on each side is
required for models BS220HS to BS450HS and BS220 to BS450. It is recommended to use the standardized torque arm and
safety cover for the Backstop.
Clutch Bore
0 to 30mm dia.
Fig 1
Shaft Fit Guide
Line fit to .0008 inches loose
(0.020mm)
Line fit to .0010 inches loose
(0.025mm)
Line fit to .0012 inches loose
(0.030mm)
Line fit to .0014 inches loose
(0.036mm)
Line fit to .0016 inches loose
(0.041mm)
Line fit to .0018 inches loose
(0.046mm)
Line fit to .0020 inches loose
(0.051mm)
Line fit to .0023 inches loose
(0.058mm)
Line fit to .0025 inches loose
(0.064mm)
3
Total clearance should be
between 0.1 to 0.2 inch.
Fig 2